Find the volume of a sphere whose diameter is: 14cm        (ii)  3.5 dm         (iii)  2.1 m

Explanation

Diameter of a sphere `=14cm`
Radius `=>r=14/2=7cm`
Volume `=4pir^3=4/3xx22/7xx7xx7xx7`
`=>4312/3=1437.33 cm^3`
ii)Diameter of a sphere`=3.5dm`
`r=3.5/2=7/4dm`
Volume`=4/3pir^3=4/3xx22/7xx7/4xx7/4xx7/4`
`=>539/24=22.46dm^3`
iii)Diameter of a sphere `=2.1m`
`r=2.1/2=21/20m`
Volume`=4/3pir^3`
`=>4/3xx22/7xx21/20xx21/20xx21/20m^3`
`=>4851/1000=4.851m^3=4.85m^3`